CN101627246A - Screw joint for steel pipe - Google Patents
Screw joint for steel pipe Download PDFInfo
- Publication number
- CN101627246A CN101627246A CN200880004755A CN200880004755A CN101627246A CN 101627246 A CN101627246 A CN 101627246A CN 200880004755 A CN200880004755 A CN 200880004755A CN 200880004755 A CN200880004755 A CN 200880004755A CN 101627246 A CN101627246 A CN 101627246A
- Authority
- CN
- China
- Prior art keywords
- coating
- tunicle
- steel pipe
- alloy
- lubricated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
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- 238000000576 coating method Methods 0.000 claims abstract description 154
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 51
- 239000000956 alloy Substances 0.000 claims abstract description 51
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 30
- 238000005461 lubrication Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 19
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 13
- 229910052738 indium Inorganic materials 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 229910017518 Cu Zn Inorganic materials 0.000 claims abstract description 9
- 229910017752 Cu-Zn Inorganic materials 0.000 claims abstract description 9
- 229910017943 Cu—Zn Inorganic materials 0.000 claims abstract description 9
- 229910052718 tin Inorganic materials 0.000 claims abstract description 9
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 9
- 229910020947 Sn-M2 Inorganic materials 0.000 claims abstract description 8
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 8
- 238000007747 plating Methods 0.000 claims description 51
- 239000000843 powder Substances 0.000 claims description 17
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- 238000005260 corrosion Methods 0.000 abstract description 39
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- 239000003795 chemical substances by application Substances 0.000 description 7
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 7
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 6
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
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- 239000000853 adhesive Substances 0.000 description 2
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- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 description 2
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- 244000178993 Brassica juncea Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000005979 Citrus limon Nutrition 0.000 description 1
- 244000131522 Citrus pyriformis Species 0.000 description 1
- YPZMPEPLWKRVLD-PJEQPVAWSA-N D-Glycero-D-gulo-Heptose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)[C@@H](O)C=O YPZMPEPLWKRVLD-PJEQPVAWSA-N 0.000 description 1
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- 229910000846 In alloy Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 229910020938 Sn-Ni Inorganic materials 0.000 description 1
- 229910018956 Sn—In Inorganic materials 0.000 description 1
- 229910008937 Sn—Ni Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910007563 Zn—Bi Inorganic materials 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
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- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
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- 239000009719 polyimide resin Substances 0.000 description 1
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- 230000001376 precipitating effect Effects 0.000 description 1
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- 230000008439 repair process Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
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- 229960004889 salicylic acid Drugs 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
- C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/042—Mixtures of base-materials and additives the additives being compounds of unknown or incompletely defined constitution only
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/08—Screw-threaded joints; Forms of screw-threads for such joints with supplementary elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/182—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for screw-threaded joints
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2201/041—Carbon; Graphite; Carbon black
- C10M2201/0413—Carbon; Graphite; Carbon black used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
- C10M2201/042—Carbon; Graphite; Carbon black halogenated, i.e. graphite fluoride
- C10M2201/0423—Carbon; Graphite; Carbon black halogenated, i.e. graphite fluoride used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/14—Synthetic waxes, e.g. polythene waxes
- C10M2205/143—Synthetic waxes, e.g. polythene waxes used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/16—Paraffin waxes; Petrolatum, e.g. slack wax
- C10M2205/163—Paraffin waxes; Petrolatum, e.g. slack wax used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/1003—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbasedsulfonic acid salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/34—Lubricating-sealants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/023—Multi-layer lubricant coatings
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/14—Composite materials or sliding materials in which lubricants are integrally molded
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
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Abstract
The invention provides a kind of screw joint for steel pipe.This screw joint for steel pipe has improved the anti-leaks, wearability of the pin/cover shaped steel pipe screw joint that comprises the contact surface (30) with screw section and no threaded metal contacting part and particularly with respect to the corrosion resistance of crevice corrosion.The contact surface of at least one side in pin and the cover is covered by the 1st coating (34) that is made of Cu-Zn alloy and Cu-Zn-M1 alloy (M1 be select from Sn, Bi and In more than a kind or 2 kinds).Form lower floor (32) that constitutes by side in Ni coating (32a) and/or the Cu coating (32b) or two sides and the upper strata that constitutes by Sn-M2 alloy (M2 is the element of selecting from Bi, In, Ni, Zn and Cu more than a kind or 2 kinds) coating (36) on also can under the 1st coating, reaching.On coating, can form solid lubrication tunicle (38a) and thick liquid or semi-solid lubricated tunicle (38b) as lubricated tunicle (38).
Description
Technical field
The present invention relates to a kind of screw joint for steel pipe that has improved wearability and corrosion resistance.Screw joint for steel pipe of the present invention is particularly suitable for the binding of oil well pipe.
Background technique
The oil well pipe (OCTG) that is driven in order to carry out digging in oil field, gas field its total length under long situation reaches several kms.Typically oil well pipe that should be long connects it successively by linking tens meters unit head's steel pipe by the pipe joint (coupling) than short tubular and constitutes.The material of steel pipe and pipe joint is carbon steel, stainless steel or high alloy steel according to Environmental Conditions.
The binding of these steel pipes is undertaken by pin that has external thread part at outer circumferential face and cover (box) screw-thread fit that has internal thread part at inner peripheral surface.Say that typically pin is formed on the two ends of steel pipe, cover is formed on the inside of short pipe joint.Is screw joint for steel pipe by such pin with the linking department that cover constitutes.
In requiring the screw joint for steel pipe of high-air-tightness, be formed with no threaded metal contacting part respectively at the base portion of the internal thread of the externally threaded top of pin and cover.One end of steel pipe is inserted into pipe joint, the outside thread of fixed pin and the internal thread of cover and when selling with the no threaded metal contacting part of cover, by forming the tightness that metallic seal (metal-to-metal seal) improves joint each other with the amount of interference butt of regulation.
For oil well pipe being made regular check on etc. and it is mentioned, become flexible the screw thread of inipple and each steel pipe is pulled down (breakout) from the oil well pipe that pipe joint separates, after check to wait finishing, binding thread portion and carry out oil well pipe assembling (make-up) reuses once more.In oil well pipe assembling with when pulling down, the face that slips of pin and the screw section of cover and do not have the threaded metal contacting part and can be subjected to stronger friction repeatedly.Thereby, inipple is not if have abundant durability for friction, then when assembling repeatedly and pulling down, in the screw section, particularly do not have the threaded metal contacting part and produce poor sealing (anti-leaks is bad), wearing and tearing (galling) (the severe cut that can not repair).
Therefore, play the effect of screw coupling for oil well pipe, require: a) the self-evident tensile force that will stand on the axial direction that produces by the deadweight of the pipe that connects, b) to stand inside and outside hydrodynamic pressure, and, c) even sleeve pipe (big footpath size) uses more than 4 times repeatedly, pipeline (path size) uses more than 10 times repeatedly, poor sealing, wearing and tearing be can not produce yet, good anti-leaks and wearability kept.Particularly, have the deeper and deeper tendency of the degree of depth of oil well in recent years, and the frequency of utilization under harsh environment such as polar region increases to some extent, the desired quality of screw joint for steel pipe is more and more stricter.
In the past, carry out such operation in following patent documentation 1 grade, proposing, promptly, contact surface to the screw section of pin, cover etc. is implemented surface treatments such as copper facing or phosphatizing, and in order further to improve wearability, whenever when assembling, all to the joint interface coating of pin or cover be known as coating, add the complex grease that heavy metals such as Pb are arranged.
But in the today that prevents that world environments from polluting becomes urgent problem, the use that adds the coating that Pb is arranged just is restricted.Also develop and used a kind of coating (being called green coating) that does not contain heavy metals such as Pb, Zn, Cu.But,, therefore, can't prevent to produce wearing and tearing according to the material of joint because the performance of green coating is not very high.
As the anti-leaks that improves screw joint for steel pipe and the another kind of method of wearability, following method etc. has been proposed:
1) powder of fluororesin is disperseed to be mixed in the method for coating,
2) form the method that lubricity is protected tunicle by sputter,
3) alternative composite lubricating grease and adopt the method for solid lubrication tunicle,
But all can't obtain sufficient anti-leaks and abrasion resistance properties.
Remember down proposed in the patent documentation 2 a kind of at the pipe joint that constitutes joint internal thread part and no threaded metal contacting part (metallic seal portion) be formed with the Cu-Sn alloy layer, the Cr amount is the high Cr steel system screw coupling for oil well pipe more than the 9 quality %.But the inventor distinguishes to exist to be easy to produce the such problem of corrosion at the interface of pin and cover based on the result that this inipple is studied.This corrosion is so-called crevice corrosion, particularly applies green coating as oiling agent or forming on the coating under the situation of solid lubrication tunicle, other lubricated tunicles when fastening, and corrosion significantly.When the inipple place produces this corrosion, because the rust that produces reduces anti-leaks, the wearability of joint.
Patent documentation 1: the special fair 1-12995 communique of Japan
Patent documentation 2: TOHKEMY 2003-74763 communique
Summary of the invention
The object of the present invention is to provide a kind of such screw joint for steel pipe, promptly, even the coating green coating situation under or even do not have under the situation of coating, also show sufficient anti-leaks and wearability, and corrosion resistance is also very excellent, even on coating, have green coating, lubricated tunicle, also can prevent to produce crevice corrosion.
The Der Grundsatz der Maschinen of the wear phenomenon the when inventor assembles and pulls down screw joint for steel pipe is investigated.It is generally acknowledged that wear phenomenon is by causing heating by deformation resistance under the situation of sliding with the state of metal and Metal Contact, it is above and metal molten produced that local temperature rises to fusing point.Thereby, drawn less by deformation resistance, be that the higher material behavior of high hardness and fusing point can obtain the such conclusion of good scratch-resistant.
In above-mentioned patent documentation 2, lubricity and the high-intensity interaction of Cu the improve effect of bringing into play wearability of the Cu-Sn alloy layer that has illustrated in this proposition by lower (shear fracture stress the is less) Sn of intensity.With respect to this, the inventor finds, for the material of coating, when selecting to produce the so suitable alloy composition of the intermetallic compounds of high hardness and this alloy and containing dystectic formation element, is difficult to take place above-mentioned fusing, can obtain good scratch-resistant.By this viewpoint, the alloy layer of Cu base is comparatively suitable.
On the other hand, as mentioned above, in the Cu-Sn alloy layer that in patent documentation 2, proposes, exist to be easy to produce the such problem of crevice corrosion.It is generally acknowledged, form miniature galvanic cell between the steel of the reason of this crevice corrosion Cu that is basically at easy oxidation metal not and the easy oxidation metal that is contacted.Therefore as can be known, in order to address this problem, than the metal of the easy oxidation of Cu, especially easily the higher Zn of the degree (ionization tendency) of oxidation or the Cu-Zn class alloy layer that forms with the Cu alloyage more than a kind selected with Zn with from Sn, Bi, In as other easy oxidation metals are the most suitable.
Under the situation of Cu-Sn alloy, Sn is the metal than the easy oxidation of Cu, but under the situation with Sn and Cu alloyage only, though agnogenio, it is generally acknowledged, because the Sn passivation, therefore formation that can't the restraining galvanic cell, produce crevice corrosion and corrosion resistance reduces.
At this, the present invention is a kind of screw joint for steel pipe, this screw joint for steel pipe is made of the pin and sleeve that is respectively equipped with the contact surface with screw section and no threaded metal contacting part, it is characterized in that the contact surface of at least one side in pin and the cover has the 1st coating that is made of Cu-Zn alloy or Cu-Zn-M1 alloy (M1 is the element of selecting more than a kind or 2 kinds) from Sn, Bi and In.
In the 3rd coating on the 2nd coating that can have up and down lower floor of the 1st coating and upper strata one or two.The 2nd coating of lower floor is at least 1 coating of selecting from plating Cu and plating Ni.On the other hand, the 3rd coating on upper strata is the coating that is made of Sn-M2 alloy (M2 is the element of selecting from Bi, In, Ni, Zn and Cu more than a kind or 2 kinds).
The 2nd coating of lower floor can play and improve the 1st coating for as by the effect of the being adjacent to property of the contact surface of the inipple of plating substrate.As long as the material of inipple is a carbon steel, the being adjacent to property of the 1st coating is just no problem usually, and when material was stainless steel or high alloy steel, the being adjacent to property of the 1st coating was not enough sometimes.When the reduction of being adjacent to property, the 1st coating can't be brought into play the effect as purpose.In this case, by being formed as described above the 2nd coating as substrate at contact surface in advance, can guarantee the being adjacent to property of the 1st coating.The coating of making is fit to plating Cu or plating Ni for this reason, also can make Cu coating and Ni coating the two.The 2nd coating of this lower floor becomes extremely thin getting final product by strike plating.
When the upper strata of the 1st coating forms the 3rd coating, can further improve the scratch-resistant of screw joint for steel pipe.For this purpose, it is comparatively suitable to have the soft coating of self-lubricity.Self-lubricity is meant the lubricity of himself wearing and tearing and demonstrating by material.The coating that shows self-lubricity removes the sliding based on self wearing and tearing, and the Pb powder that the powder of generation also can be correspondingly contained with coating etc. is similarly brought into play effect to lubricity, thereby brings into play higher lubricity.The representational metal-plated of this kind is plating Sn, but, plating Sn becomes the problem that α becomes fragile, is known as tinplague mutually mutually mutually by β owing to existing under the extremely low temperature, therefore, under the Environmental Conditions of the such strictness of screw joint for steel pipe, probably can't bring into play the self-lubrication effect fully.
The inventor finds, is formed on when containing the Sn alloy layer of selecting of element more than a kind among the Sn from Bi, In, Ni, Zn and Cu, becomes when avoiding the tinplague problem, can bring into play the coating of self-lubricity.By forming the 3rd coating on this upper strata, can further improve the scratch-resistant of screw joint for steel pipe.
The coating that utilizes among the present invention all forms by electric plating usually.On principle, also can use other electro-plating method (particularly with respect to the 2nd thin coating) such as vapor plating, electroless plating, but, therefore, be difficult to use the electro-plating method except that electric plating owing to be to be formed with by the inipple of electronplate at steel tube end part.
(forming under the situation of the 3rd coating on upper strata is the 3rd coating at the coating of the superiors, under the situation of the 3rd coating that does not form the upper strata, be the 1st coating) the surface form at least 1 layer of lubricated tunicle, can further improve the wearability of screw joint for steel pipe.
In screw joint for steel pipe of the present invention, might not need so lubricated tunicle.Under the situation of coating green coating before the assembling, be so particularly.But, in the material of inipple is to be easy to produce under the situation of the stainless steel of wearing and tearing or high alloy steel, by form lubricated tunicle on the upper strata, can further improve wearability, do not use green coating just can assemble, can improve the efficient of the assembling operation of oil well pipe.
Should can make 1 layer of lubricated tunicle from the lubricated tunicle of thick liquid, semi-solid lubricated tunicle and solid lubrication tunicle, selecting by lubricated tunicle.Because lubricated tunicle of thick liquid and semi-solid lubricated tunicle have flowability, therefore, under wearing and tearing so high surface stress conditions, ooze out in generation, can be with in the gap of lubricating between the contact surface that composition supplies to inipple expeditiously, thus can bring into play the extra high abrasive effect that prevents.The lubricated tunicle that uses does not preferably contain harmful heavy metal powder in fact.On the other hand, the solid lubrication tunicle is preferably the tunicle that contains the lubricity powder in suitable organic or inorganic adhesive stroma.By the part wearing and tearing of tunicle under assembling, high surface pressure when pulling down, emit the lubricity powder, the performance lubrication.
Lubricated tunicle also can form 2 layers.In this case, consider from the aspect of improving effect of wearability, preferably lower floor is made the solid lubrication tunicle, lubricated tunicle of thick liquid or semi-solid lubricated tunicle are made in the upper strata.
There is such problem under the situation of the Cu-Sn alloy layer that in above-mentioned patent documentation 2, proposes, promptly, apply green coating thereon or when covering with lubricated tunicle such as solid lubrication tunicle, because of crevice corrosion is easy to produce significantly corrosion in the interface of pin and cover, but employing the present invention, by coating being made the alloy plating of Cu-Zn class, can fully prevent this corrosion, thereby avoid causing anti-leaks, wearability to reduce by corrosion.Thereby, by forming lubricated tunicle more than 1 layer or 2 layers electroplating, can not produce crevice corrosion and further improve the wearability of screw joint for steel pipe.
Do not show excellent anti-leaks and wearability even screw joint for steel pipe of the present invention has coating yet, can be used for being attached at the oil well pipe that strict environment uses down.In addition,, use, also can not cause corrosion resistance to reduce by crevice corrosion even on coating, form lubricated tunicle or apply green coating in order further to improve wearability.Therefore, as required, can utilize lubricated tunicle, green coating and seek further to improve wearability.
Description of drawings
Steel pipe when Fig. 1 schematically represents the steel pipe shipment and the package assembly of pipe joint.
Fig. 2 schematically represents the engagement portion of inipple.
Fig. 3 be the expression be formed on inipple of the present invention contact surface by the explanatory drawing of membrane structure.
Description of reference numerals
A, steel pipe; B, pipe joint; 1, pin; 2, cover; 3a, external thread part; 3b, internal thread part; 4a, 4b, no threaded metal contacting part; 5, shoulder; 30, steel surface; 32, lower floor's the 2nd coating; 32a, Ni coating; 32b, Cu coating; 34, Cu-Zn class alloy layer (the 1st coating); 36, upper strata Sn alloy layer (the 3rd coating); 38, lubricated tunicle; 38a, solid lubrication tunicle; 38b, semisolid or thick liquid lubricate tunicle.
Embodiment
Below, illustrate in greater detail embodiments of the present invention.In addition, in the following description, as long as do not specify, % just is meant the meaning of quality %.
Fig. 1 schematically represents the package assembly of typical inipple, the pipe for oil well use steel pipe the when package assembly of this joint is represented shipment and the state of pipe joint.Be formed with the pin 1 that has external thread part 3a at outer surface at the two ends of steel pipe A, be formed with the cover 2 that has internal thread part 3b at internal surface in the both sides of pipe joint B.Pin is meant the meaning with externally threaded inipple part, and cover is meant the meaning of the inipple part with internal thread.End at steel pipe A is fastened with pipe joint B in advance.Though not shown, before shipment, the safety cover that is used to protect each screw section is installed pin and the putting of pipe joint B of not fastening steel pipe A, their were removed before inipple uses.
Say that typically as shown in the figure, pin is formed on the two ends outer surface of steel pipe, cover is formed on the internal surface as the pipe joint of other parts.Otherwise but, on principle, also the internal surface at steel pipe two ends can be done completely, the outer surface of pipe joint is made pin.In addition, also exist and do not utilize pipe joint and an end of steel pipe is made the inipple that pin, its other end are done complete integral way.The present invention can be used for these all inipples.
Fig. 2 schematically represents the structure of representational screw joint for steel pipe (hereinafter to be referred as making " inipple ").Inipple is made of the pin 1 of the end outer surface that is formed on steel pipe A and the cover 2 that is formed on the internal surface of pipe joint B.Pin 1 comprises external thread part 3a, is positioned at the no threaded metal contacting part 4a and the end face shoulder 5 on steel pipe top.Corresponding with it, cover 2 comprises the no threaded metal contacting part 4b of internal thread part 3b and its inboard.
Pin 1 and overlap 2 the 3a of screw section separately, 3b and do not have the contact surface that threaded metal contacting part 4a, 4b constitute inipple, this contact surface requires wearability, tightness (anti-leaks), corrosion resistance.Therefore, generally before assembling, applied in the past and contain the coating heavy metal powder, that be known as complex grease, but now, the use of such coating just is restricted.
In inipple of the present invention, as Fig. 3 to shown in the no threaded metal contacting part, at the contact surface of at least one member of pin and sleeve, on the surface of steel 30 from below be formed with the 2nd coating 32 that constitutes by the Ni of lower floor coating 32a and upper strata Cu coating 32b successively, (M1 is from Sn by Cu-Zn alloy or Cu-Zn-M1 alloy, the element more than a kind or 2 kinds that Bi and In select) the 1st coating 34 of Gou Chenging, (M2 is from Bi to the Sn-M2 alloy, In, Ni, the element more than a kind or 2 kinds that Zn and Cu select) the 3rd coating 36 of Gou Chenging, the lubricated tunicle 38 that constitutes by the solid lubrication tunicle 38a of lower floor and upper strata thick liquid or semi-solid lubricated tunicle 38b.
In the present invention, it is essential that the 1st coating 34 that is made of Cu-Zn alloy or Cu-Zn-M1 alloy (following their general designations are made Cu-Zn class alloy) is only arranged, and only depends on the 1st coating just can bring into play the raising effect of anti-leaks and wearability according to the material (for example situation of carbon steel) of inipple, Environmental Conditions fully.The the remaining the 2nd and the 3rd coating, lubricated tunicle are used according to situation and according to needs and are got final product.Below, comprise that also coating, lubricated tunicle describe successively arbitrarily for these.
The mother metal steel pipe
The steel pipe that links with inipple of the present invention is preferably oil well pipe.Because the wearability of inipple of the present invention is very excellent, therefore, even under the situation of the screw coupling for oil well pipe of the high alloy steel that is applied to be easy to produce wearing and tearing, the wearing and tearing in the time of also can preventing to assemble repeatedly and pull down.
Thereby, since aspect preventing to wear and tear to the steel grade of the mother metal steel pipe steel of inipple (constitute) without limits, therefore, steel grade can be any in carbon steel, stainless steel and the high alloy steel.Consider from the aspect of corrosion resistance, preferably contain the above high alloy steel of Cr3%.When the such steel of illustration, can enumerate the Cr amount and be 5%, 13% and 25% steel.
Screw section, no threaded metal contacting part as the contact surface of inipple form by cutting usually.This contact surface can keep being ground the state after the processing, perhaps also can be roughened by shot blast before forming coating deferring to the present invention.When carrying out roughening, particularly after electroplating, form under the situation of lubricated tunicle, can obtain the such advantage of retentivity rising of lubricated tunicle.But, even do not carry out roughening, also can utilize the surperficial a little roughening after the throwing power (perturbationof deposition) of plating makes plating, therefore, can keep lubricated tunicle fully.
Only a 's in pin and sleeve (for example being cover) contact surface is deferred to the present invention and is formed under the situation of coating or even lubricated tunicle, the contact surface of another member (for example being pin) can keep grinding, perhaps also can form the suitable tunicle of giving the layer more than 1 or 2 that lubricity and/or corrosion protection use of except that the present invention other.By the pin of the end outer surface that is formed on steel pipe be formed in the typical inipple that the cover of pipe joint internal surface constitutes, to the short pipe joint of length, promptly cover carries out processing of the present invention and is easy to operate.
The 2nd coating of substrate
In order to improve the being adjacent to property of the 1st coating that constitutes by Cu-Zn class alloy, as required, can be formed with in the lower floor of the 1st coating by one or two the 2nd coating that constitutes in Ni coating and the Cu coating and electroplate as substrate.
The 2nd coating of substrate is preferably the flash plating that short strike plating forms by current"on"time.In field of electroplating, the known strike plating that Cu and Ni are arranged in the present invention, also can similarly be implemented with strike plating in the past.Usually, the Ni strike plating adopts chlorination bath (Wood bath) or sulfate baths (watt is bathed) to carry out mostly, and the Cu strike plating adopts cyano group bath (copper cyanider electroplating bath) to carry out mostly.But, also can use other electroplating bath.
In addition, before electroplating at first, defer to common method to carried out common pretreatments such as degreasing, pickling by plate surface.
The thickness of the 2nd coating of substrate is preferably the scope of 0.2～2 μ m, more preferably 0.5～1 μ m.Under the situation that forms Cu and these two coating of Ni, preferred 2 layers aggregate thickness is no more than 2 μ m.
Since the being adjacent to property of plating of Ni coating to improve effect high especially, therefore, only be preferably to make plating Ni under 1 layer the situation at the 2nd coating.Because Cu is preferable with combining of the 1st coating in plating, therefore, be under 2 layers the situation, preferably the 32a of lower floor to be made plating Ni at the 2nd coating that makes substrate, upper strata 32b makes and plates Cu.
The 1st coating
When new designs of threaded joints is given anti-leaks and wearability, in order to improve wearability, cover under the situation of contact surface by green coating, lubricated tunicle, anti-leaks, the wearability avoiding in order to prevent crevice corrosion causing thus reduce, and the 1st coating that is made of Cu-Zn class alloy also is necessary coating in the present invention.Do not forming under the situation of above-mentioned the 2nd coating as substrate, the 1st coating becomes orlop and electroplates.
The thickness of the 1st coating is preferably 1～40 μ m usually, more preferably 3～20 μ m.
At the 1st coating is under the situation of Cu-Zn alloy, and the Zn amount in the alloy is preferably in 20～90% the scope, more preferably 30～70%.Cross when low at the Zn amount, the corrosion resistance of coating reduces, and can't prevent crevice corrosion.When the Zn amount was too high, anti-leaks, wearability reduced.
At the 1st coating is under the situation of Cu-Zn-M1 alloy (M1 is the element of selecting from Sn, Bi and In more than a kind or 2 kinds), and preferred alloy composition is Cu:30～60%, Zn:3～30%, M1 (being the total amount under the situation more than 2 kinds): 20～60%.As M1, preferred especially Sn:35%～55%.
The 3rd coating on upper strata
No matter the 1st coating does not contain Sn and still contains Sn, and its amount is all less, therefore, forms the higher coating of self-lubricity by layer thereon, can further improve the wearability of inipple of the present invention.Therefore, the 3rd coating is made Sn-M2 alloy (M2 is the element of selecting more than a kind or 2 kinds) plating from Bi, In, Ni, Zn and Cu.The 3rd coating is formed on as required on the 1st coating and gets final product.
As M2, be preferably Bi especially.The thickness of the 3rd coating is preferably 3～40 μ m usually, more preferably 5～25 μ m.Under the situation that forms the 3rd coating, the aggregate thickness of the 2nd coating and the 3rd coating is preferably below the 40 μ m.The amount of alloying element M2 in the Sn-M2 alloy (being its total amount under the situation more than 2 kinds) is preferably 0.1～50%, more preferably in 0.1～10% the scope.When alloying element M2 amount was too high, anti-leaks, wearability reduced, and crossed when low at this amount, can't prevent to produce tinplague.
Above-mentioned the 1st coating that is made of Cu-Zn class alloy and above-mentioned the 3rd coating that is made of the Sn-M2 alloy all can form by the plating of adopting known sulfuric acid bath, cyano group bath, methanesulfonic acid bath, glucose acid bath, Pyrophosphoric acid bath, lemon acid bath, winestone acid bath, sulfosuccinic acid bath or boron to fluoridize bath etc.The plating conditions such as temperature, pH, current density of bathing be as long as can obtain the coating of suitable alloy composition, and consider that bath is managed or productivity etc. decided and got final product.As known in those skilled in the art, except that the compound as the supply source of precipitating metal, electroplating bath can contain with glazed agent, pH adjusts various adding ingredients headed by the agent etc.
Be described more specifically, the Cu-Zn alloy plating in the 1st coating also is known as brass electroplating, is used to for a long time to decorate, utilizes for improving with purpose such as the cementability of rubber.As electroplate liquid, use the cyano group bath of alkalescence mostly, but also can use non-cyano group baths such as acid Pyrophosphoric acid bath, glucoheptose acid bath.Preferred cyano group is bathed among the present invention.
At the 1st coating is under the situation of Cu-Zn-M1 alloy, also can use the M1 metallic compound to be dissolved in the electroplating bath that electroplate liquid that the Cu-Zn alloy uses forms and similarly electroplates.Particularly, Cu-Zn-Sn is golden plating tunicle because electroplating, therefore, for a long time as gold-plated alternative, because the tone of electroplating tunicle according to the Sn amount changes (when the Sn amount increases for silvery white), therefore, forming different cyano group bath electroplate liquids has much and sells on market.Also it can be made with keeping intact and be used for electroplating.
The Sn-M2 alloy plating that is used to form the 3rd coating can be by being that benchmark and removing in electroplating bath also adds the interpolation Sn compound as the compound of the supply source of M2 element and implements with electric plating Sn.Particularly preferred electroplating bath is that methanesulfonic acid is bathed among the present invention.
Lubricated tunicle
Inipple of the present invention only is by having the 1st coating that is made of above-mentioned Sn-Zn class alloy at contact surface and according to circumstances being the 3rd coating on the 2nd coating of lower floor and/or upper strata, according to the material of inipple no matter before assembling the coating green coating still do not have coating, can both bring into play sufficient wearability, anti-leaks.But, be to be easy to produce under the situations such as high alloy steel of wearing and tearing in the material of inipple, as required, can on coating, form at least 1 layer of lubricated tunicle and further improve wearability.
Lubricated tunicle can make from the lubricated tunicle of thick liquid, semi-solid lubricated tunicle and solid lubrication tunicle, select more than 1 layer or 2 layers.Lubricated tunicle like this is known, for example in TOHKEMY 2001-65751 communique, TOHKEMY 2002-221288 communique, TOHKEMY 2002-327875 communique, TOHKEMY 2002-348587 communique, record the solid lubrication tunicle that constitutes by the sintering tunicle that in tackiness agent, disperses the lubricity powder to form, in TOHKEMY 2002-173692 communique, TOHKEMY 2004-53013 communique, record thick liquid or semi-solid lubricated tunicle as the tunicle that in base oil, contains various lubricated compositions.In the present invention, also can use so known lubricated tunicle.
It is enough that lubricated tunicle is generally 1 layer or 2 layers.Making under 2 layers the situation, the solid lubrication tunicle is made by lower floor, lubricated tunicle of thick liquid or semi-solid lubricated tunicle are made in the upper strata, and to improve effect bigger, therefore preferable for wearability like this.Be that the lubricated tunicle on upper strata is preferably the lubricated tunicle of the thick liquid bigger than the flowability of the lubricated tunicle of semisolid under 2 layers the situation at lubricated tunicle.
The solid lubrication tunicle is preferably the tunicle that contains the lubricity powder, the lubricated tunicle that promptly utilizes suitable inorganic or organic bond to form in conjunction with the lubricity powder.
Example as the lubricity powder that is preferred for the solid lubrication tunicle is not limited to these, can enumerate graphite, MoS
2(molybdenum disulfide), WS
2(tungsten disulfide), BN (boron nitride), PTFE (teflon), CF
X(fluorographite), CaCO
3(calcium carbonate) etc.Wherein, more preferably graphite, fluorographite, MoS
2And WS
2They are laminated crystalline structures, and the face internal bond strength of its crystallization is higher, between face adhesive strength a little less than, therefore, be easy to produce between the face that gives sliding effect and peel off, help improving wearability.
As the tackiness agent of solid lubrication tunicle, can use the composition that can form organic and/or inorganic tunicle.The example that organic envelope forms composition is the good organic resins of heat resistance such as epoxy resin, polyimide resin, polyamide-imide resin.Form composition as organic envelope, can enumerate the organic or inorganic compound that Ludox, alkoxy silane, alkoxytitanium etc. can form metal oxide coating.
The lubricity powder is mixed with the solution of the tackiness agent that can form tunicle, the coating liquid that obtains is coated in the contact surface of inipple, preferably form the solid lubrication tunicle during sintering tunicle in heating.Heating-up temperature depends on the kind of tackiness agent, but preferably is about 150 ℃ under the situation of epoxy resin～250 ℃ temperature.
The thickness of preferred solid lubrication tunicle is 5～30 μ m, and the amount of the lubricity powder in the tunicle is 10～50 quality %.
Aqueous or the semisolid lubricated tunicle of thickness does not preferably contain heavy metal powder such as Pb, Zn to environment, human body harmful, Cu in fact.Lubricated tunicle like this contains various lubricities a large amount of more than a kind or 2 kinds in base oil (for example mineral oil, high-grade aliphatic ester, lubricating grease) gives composition (for example playing high alkalinity sulfonic acid Ca, phenol Ca, Salicylic Acid Ca, the contour alkaline metal salt of carboxylic acid Ca, paraffin, the metallic soap of the effect of extreme pressure agent), according to the amount of basic oil viscosity, solid constituent, its proterties is thick liquid or semisolid.Also can utilize the green coating of selling on the market and form this lubricated tunicle.The preferred thickness of thick liquid or semi-solid lubricated tunicle is 10～200 μ m.
Particularly under the situation that forms at least 1 layer of lubricated tunicle on the coating, inipple of the present invention can omit green coating before fastening (assembling) operation and apply and use the efficient of raising oil well pipe assembling operation.But, also can before assembling, apply green coating as required.
In addition, in inipple of the present invention, even under the situation that is formed with lubricated tunicle on the coating of the superiors, also can prevent crevice corrosion, therefore, even longer between maintaining period before using, also can prevent inipple contact surface burn into and cause the wearing and tearing that are easy to produce by this corrosion.
Embodiment
Below, enumerate embodiments of the invention and comparative example and come illustration effect of the present invention.But the present invention is not limited to these embodiments.
Dispose a plurality of pin and sleeves respectively; Above-mentioned pin is being that external diameter that Cr13% steel (add Ni and Mo) constitutes is that 244.5mm, wall thickness are that 13.84mm, length are that the two ends of the seamless steel pipe of 1200mm have the external thread part that forms by cutting, reach no threaded metal contacting part (metallic seal portion) by a kind of high alloy steel; Above-mentioned cover is used to insert this pin and connects, and has the internal thread part that forms by cutting, and no threaded metal contacting part in the internal surface both sides of the pipe joint that is made of identical steel grade.
At the whole inner peripheral surface of pipe joint, promptly comprise having the screw section and do not have on the face of contact surface of cover of threaded metal contacting part, form the covering structure shown in table 1 (to represent towards the order of lower layer side) and electroplate and lubricated tunicle from the superiors.Plating with its degreasing and pickling, utilizes then to electroplate and implements after the outer surface of using suitable seal material seal pipe joint and end face.On the other hand, for pin, except in order not handle sandblast (blast) processing except that descale and carrying out with glass bead (glass beads) before the test.
Each summary of handling that cover is implemented is as follows.
Substrate the 2nd coating
Plating Ni: use Wood to bathe;
Plating Cu: use cyano group to bathe;
Cu-Zn class the 1st coating
All use cyano group to bathe.
Plating Cu-Zn alloy: Zn (amount) about 32%;
Plating Cu-Zn-Sn alloy: Zn is about 7%, and Sn about 40%;
Plating Cu-Zn-Bi alloy: Zn is about 30%, and Bi about 10%;
Plating Cu-Zn-In alloy: Zn is about 25%, and In about 15%.
Upper strata Sn alloy the 3rd coating
All use methanesulfonic acid to bathe.
Plating Sn-In alloy: In about 5%;
Plating Sn-Cu-Bi alloy: Cu is about 10%, and Bi about 1%;
Plating Sn-Ni alloy: Ni about 8%;
Plating Sn-Bi alloy: Bi about 1%;
Plating Sn-Zn alloy: Zn about 3%.
Comparative example
Except that following coating, same as described above in the coating that in comparative example, uses.
Plating Cu-Sn alloy: use neutral the bath; Cu is about 36%, and Sn about 64%.
Lubricated tunicle
The solid lubrication tunicle that contains graphite: be dispersed in the coating of the composition that forms in the epoxy resin and the lubricated tunicle that sintering (heating-up temperature is about 200 ℃) forms as the lubricity powder with 30% amount by making graphite.
The solid lubrication tunicle that contains fluorographite: by will be as the CF of lubricity powder
X(fluorographite) is with 4% amount and make paraffin be dispersed in the composition that forms in the polyethylene resin with 10% amount to be warming up to 150 ℃ and lubricated tunicle that its coating is formed.
Thick liquid lubricates tunicle: mineral oil as base oil, is formed as the coating of the grease composition of lubricity composition by containing paraffin and high alkaline calcium sulfonate.Thickness is about 100 μ m.
Green coating
Green coating uses Bestolife (TM trade mark) the 3010NM SPECIAL of Bestolife Corporation corporate system.Applied thickness is about 100 μ m.Green coating is that coating is used before assembling at the scene originally, but in the present example, in order to test coating according to circumstances and in the end in the covering of inipple is handled.
By use the cover that covers after the processing as shown in table 1ly repeatedly with its with lock solid (assembling) and unclamp (pulling down), investigate wearability.This abrasion test is carried out as follows: at normal temperatures with the moment of torsion of 49351.8Nm (36400ftlbs) carry out fastening after, it is unclamped and pull down pin, it is removed the outer circumferential face of visual observations pin, the generation situation of investigation wearing and tearing by the lubricated tunicle solvent clean that is attached to pin.Repeat this operation to 10 time, will be up to the number of times (not producing the fastening number of times that unclamps of wearing and tearing) till producing wearing and tearing as test result.This number of times is the last meaning of wearing and tearing that do not produce that is meant for 10 times in 10 tests.
In the corrosion test that is used for investigating crevice corrosion, implement like that to handle with the covering of applying mechanically of the same content shown in the table 1 to the steel plate (width is that 12mm, length are that 30mm, thickness are 3mm) of steel grade same as described above (Cr13% steel).The coverage rate of this covering steel plate is placed it in down with glass bead to have carried out will making test film with the material of bolt central part on the steel plate (width is that 20mm, length are that 30mm, thickness are 3mm) of the identical steel grade after the sand blast.This test film was flooded 1 month in the boiled water that contains 20% salt, measure the maximum corrosion depth of connecting part.Judge corrosion resistance as described below by this maximum corrosion depth.
A: less than 1 μ m;
More than the B:1 μ m～less than 5 μ m;
More than the C:5 μ m～less than 10 μ m;
More than the D:10 μ m;
More than Shi Yan result also is shown in the table 1 in the lump.
Table 1-1
Table 1-2
Whether as shown in table 1, in an embodiment of the present invention, steel grade is the high alloy steel that is easy to produce wearing and tearing, no matter only handle in the cover side, is all showing good scratch-resistant and corrosion resistance in the example.Specifically, directly form under the situation of Cu-Zn class the 1st coating on the inipple surface, can not produce wearing and tearing up at least the 8 time not carrying out lower floor to electroplate.On the other hand, under the situation of plating Ni that carries out lower floor or plating Ni/Cu, in whole examples, wearing and tearing can be do not produced fully up to the 10th time, high wearability can be obtained.For corrosion resistance, in whole examples, be the A grade, that is, can obtain maximum corrosion depth under the test conditions less than the so high corrosion resistance of 1 μ m.
On the other hand, shown in comparative example, in plating Cu, plating Sn and Sn-Bi alloy, electroplate even implement lower floor, wearability also can reduce.The excelling in abrasion resistance of plating Cu-Sn, but corrosion resistance is extremely low.
Claims (7)
1. screw joint for steel pipe, this screw joint for steel pipe is made of pin and sleeve, and this pin and sleeve comprises the contact surface with screw section and no threaded metal contacting part respectively, it is characterized in that,
The contact surface of at least one side in pin and the cover has the 1st coating that is made of the Cu alloy of selecting from Cu-Zn alloy and Cu-Zn-M1 alloy, wherein M1 is the element of selecting from Sn, Bi and In more than a kind or 2 kinds.
2. screw joint for steel pipe according to claim 1 is characterized in that,
The contact surface of at least one side in the above-mentioned pin and sleeve has at least 1 the 2nd coating selecting the Ni from plating Cu and the plating lower floor as above-mentioned the 1st coating.
3. screw joint for steel pipe according to claim 1 and 2 is characterized in that,
The contact surface of at least one side in the above-mentioned pin and sleeve has the 3rd coating that is made of the Sn-M2 alloy upper strata as above-mentioned the 1st coating, and wherein M2 is the element of selecting from Bi, In, Ni, Zn and Cu more than a kind or 2 kinds.
4. according to each described screw joint for steel pipe in the claim 1～3, it is characterized in that,
Coating surface in the superiors has at least 1 layer of lubricated tunicle.
5. screw joint for steel pipe according to claim 4 is characterized in that,
Lubricated tunicle is 1 layer of lubricated tunicle selecting from the lubricated tunicle of thick liquid, semi-solid lubricated tunicle and solid lubrication tunicle.
6. screw joint for steel pipe according to claim 4 is characterized in that,
Lubricated tunicle is 2 layers of lubricated tunicle that are made of lubricated tunicle of the thick liquid on the solid lubrication tunicle of lower floor and upper strata or semi-solid lubricated tunicle.
7. according to claim 5 or 6 described screw joint for steel pipe, it is characterized in that,
The solid lubrication tunicle contains the lubricity powder.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP052905/2007 | 2007-03-02 | ||
| JP2007052905A JP4924103B2 (en) | 2007-03-02 | 2007-03-02 | Threaded joint for oil well pipe |
| PCT/JP2008/053492 WO2008108263A1 (en) | 2007-03-02 | 2008-02-28 | Screw joint for steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101627246A true CN101627246A (en) | 2010-01-13 |
| CN101627246B CN101627246B (en) | 2014-05-28 |
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ID=39738146
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880004755.1A Active CN101627246B (en) | 2007-03-02 | 2008-02-28 | Screw joint for steel pipe |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US8276946B2 (en) |
| EP (1) | EP2128506B1 (en) |
| JP (1) | JP4924103B2 (en) |
| CN (1) | CN101627246B (en) |
| AR (1) | AR065570A1 (en) |
| AU (1) | AU2008222067B2 (en) |
| BR (1) | BRPI0807034B1 (en) |
| CA (1) | CA2675613C (en) |
| EA (1) | EA015144B1 (en) |
| EG (1) | EG25490A (en) |
| MX (1) | MX2009009162A (en) |
| MY (1) | MY151616A (en) |
| PL (1) | PL2128506T3 (en) |
| UA (1) | UA96981C2 (en) |
| WO (1) | WO2008108263A1 (en) |
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| CN107466335A (en) * | 2015-04-23 | 2017-12-12 | 瓦卢瑞克石油天然气法国有限公司 | The threaded tubular connection of metal coating is provided with screw thread and on sealing surfaces |
| CN107567564A (en) * | 2015-04-23 | 2018-01-09 | 瓦卢瑞克石油天然气法国有限公司 | It is provided with that metallicity is anticorrosive and the threaded tubular element of anti-scuff coating |
| CN107532757A (en) * | 2015-04-23 | 2018-01-02 | 瓦卢瑞克石油天然气法国有限公司 | It is provided with the threaded tubular element of metallicity anti-scuff coating and lubricant layer |
| CN107466335B (en) * | 2015-04-23 | 2020-09-01 | 瓦卢瑞克石油天然气法国有限公司 | Threaded tubular connection provided with a metallic coating on the threads and on the sealing surfaces |
| CN108474503A (en) * | 2015-12-25 | 2018-08-31 | 新日铁住金株式会社 | The manufacturing method of pipe screw joint and pipe screw joint |
| US20190010767A1 (en) | 2015-12-25 | 2019-01-10 | Nippon Steel & Sumitomo Metal Corporation | Threaded Connection for Pipe or Tube and Method for Producing the Threaded Connection for Pipe or Tube |
| US10480259B2 (en) | 2015-12-25 | 2019-11-19 | Nippon Steel Corporation | Threaded connection for pipe or tube and method for producing the threaded connection for pipe or tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2675613A1 (en) | 2008-09-12 |
| PL2128506T3 (en) | 2019-08-30 |
| EG25490A (en) | 2012-01-15 |
| CN101627246B (en) | 2014-05-28 |
| AU2008222067A1 (en) | 2008-09-12 |
| WO2008108263A1 (en) | 2008-09-12 |
| AU2008222067B2 (en) | 2010-10-28 |
| US20100059986A1 (en) | 2010-03-11 |
| AR065570A1 (en) | 2009-06-17 |
| CA2675613C (en) | 2012-10-09 |
| US8276946B2 (en) | 2012-10-02 |
| EP2128506B1 (en) | 2019-01-23 |
| MY151616A (en) | 2014-06-30 |
| BRPI0807034B1 (en) | 2019-05-07 |
| EA015144B1 (en) | 2011-06-30 |
| BRPI0807034A2 (en) | 2014-04-22 |
| MX2009009162A (en) | 2009-09-04 |
| EP2128506A4 (en) | 2011-05-11 |
| EA200970827A1 (en) | 2010-02-26 |
| EP2128506A1 (en) | 2009-12-02 |
| JP4924103B2 (en) | 2012-04-25 |
| JP2008215473A (en) | 2008-09-18 |
| UA96981C2 (en) | 2011-12-26 |
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